I am amazed at the standard of sewing comes from the factory these days. Have a look at the original hem (bottom piece of fabric) on this high end lace dress. Top piece is the now finished dress which has almost a full circle skirt.

Customer paid over $200 for this dress and the hem of the dress was uneven all the way around (up to 1.5cm difference) and also the hem on the petticoat lining was lower than the outer fabric (Forgot to take a pic) been seeing this quality finish far too often lately.
Fortunately it needed hemming so I made sure it was done properly. The lace was encased in bias binding and turned up to look like the original hem, only more even. 4 rows is stitching in all, very slowly in order to catch all the lace without stretching or puckering. Thankfully I had some fabric that matched fairly closely so I could make the binding. I used my fave quilting binding technique to finish the binding ends.

Have added a couple of pics I snapped of the binding join. I love how this technique finishes perfectly each time with no excess binding and doesn't just look like the ends were chopped off and sewn together. Have tried to add a link similar to way I do the ends only very detailed and this method works for any width binding. Binding below is 8mm wide once finished.

https://so-sew-easy.com/perfectly-join-quilt-binding/#_a5y_p=4965820